Thanks for reaching out to the Community, @Dhairya.
The option to split one QuickBooks Online (QBO) company's data between two years is unavailable. You'll need to sign up for a separate QBO subscription if you haven't created one to split your company data. Here's how:
You can click the Buy Now button or the Free 30-Day Trial.
Click the Sign in link next to Already have an Intuit account?
Follow the on-screen process to proceed.
On the other hand, you can trace your transactions between two years in a single QBO company by departments, product lines, or any other significant business segments using the class tracking feature. Visit this article for more details about this feature: Get started with class tracking in QuickBooks Online.
While this option is unavailable, you can send this request to our Product Development Team to help improve your experience. They can review your suggestions and make some necessary adjustments in the next update. Let me show you how:
If there's anything else you need help with splitting your company's data, please don't hesitate to let me know. I'll be around and more than happy to help you. Keep safe!